--- service: a.root-servers.net start-period: '2017-02-06T00:00:00Z' end-period: '2017-02-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4670193384 dns-udp-queries-received-ipv6: 493164837 dns-tcp-queries-received-ipv4: 160947031 dns-tcp-queries-received-ipv6: 8680905 dns-udp-responses-sent-ipv4: 4663340978 dns-udp-responses-sent-ipv6: 492976218 dns-tcp-responses-sent-ipv4: 161335049 dns-tcp-responses-sent-ipv6: 8734555